Ironing machine



July 31, 1928. 1,678,843

E. E. ARNOLD IRONING MACHINE Filed-nec. 2s. 1921 4 sneets-sheet 1Fll3.1-

so, 734L 'l 35 A:sfg

. man

W/TNESSES /N VEA/TUR IM @MF4 July 31, 192s. 1 678,843

E. E. ARNOLD IRONING MACHINE Filed Deo. 23. 1921 4 sheets-sheet 2 F I EZ.

, y 411 MWWW July 3l, 1928.

1,678,843 E. E. ARNOLD IRONING MACH INE Filed Dec. 25% 1921 4Sheets-Sheet 3 FIGA-f F IELB.

WHA/fases July 31, 192s.

W/ TNESSE S E., E. ARNOLD IRONING MACHINE .Filed Deo. 23, l 1921 4Shets-Sheet 4 /N VEA/TOR cu-g Q. QAM! @www Wmv/MW Patented July 31,1928.

UNITED STAT-Es.

invasa en riazirr-v oFFiceE. y

EDWIN E. ARNOLD, OF PITTSBURGH, PENNSYLVANIA, .AS-SIGNOR TOTESTING-HOUSE 'ELECTRIC @c MAN UFACTURING, COMPANY, A CORPORATION 0FPENNSYLVANIA.

incisi-Ne MACHINE.

Application sied December 23, i921. Aserial No. 524,532.

This invention relates to ironing machines and has for an object toproduce a machine which is more effective for the purposes in: tendedand is'easier to operate than other machines now in use and known to me.

The ordinary domestic ironing machines consist of a stationar1v iron anda rotating padded roll. The rol is ordinarily so ary,ranged that it ispressed against the iron While rotating and is 'moved away from the ironfor the purpose of adjusting articles to be ironed or for the purpose ofreleasing articles in the process of being ironed. uch

machines are usuall so arranged that rotation'of thepadde roll isstopped when the roll is moved away from the iron. In some machines, themovement of the roll toward and away from the iron is accomplished byhand, whereas in others the roll is held against the iron by footpressure exerted through the 4vagencyof a pedal. In either caseconsiderable effort is expended by` the operator during the ironingoperation. An object of' my invention is to produce. an ironin machinein which lmotor-driven means unc er the control of the operator are`employed for the purpose of shifting the 'position of the padded rollwith relation to the iron. Y 1

A further object is tol produce a more effective iron for domesticironing machines than those now in use and known to me. A still furtherobject is to produce an ironing machine in which automatic means areemployed for regulating the temperature of the iron.

A further Objectis to produce a machine employing a thermostatic heatregulating mechanism in which simple and effective means are 'employedfor varying the adjustment of the thermostatic mechanism for the purposeof varying the temperature of the iron at the will of the operator.

These and other vobjects which will be made more apparent throughout therfurther description of my invention are attained by means of apparatusherein described vand illustrated in the drawingsaccompanying andforming a part hereof. v

In the drawings, Figure 1 is a side elevation of an ironing machineembodying my invention, portions being shown in section for convenienceof illustration. Fig. 2 is aV fragmentalsectional elevationof themachine shown in Fig. l, and illustrates the mechanism employed forrotating the roll roll and iion. Fig. 3 is a sectional view alongthe'line 3-3 of Fig..2. Fig. 4 is a fragmental Arear view of an ironembodying my invention shown in connection with thermostaticallycontrolled mechanism for delivering fuel to the burner associated withthe iron; a portion of the back plate of the iron is shown broken awayand removed and a portion yof the thermostatically controlled mechanismis shown in section for convenience of illustration. Fig. 5 is a detailview of a portion of the apparatus shown in Figure 5.' Fig. 6 is an endView of the iron shown in Fig. 4, associated with a diagram'- maticrepresentation ofaroll. Fig. 7 is. an intermediate. transverse sectionof the ironl shown in Fig. 4 associated with a diagrammaticrepresentation of a roll'. Fig. 8 is a section through a modified formof ironing shoe showing an electric, thermostatically controlled heatingmechanism.

Referring to the drawings, the iron 7 is of the usual externalappearance and is rigidl mounted on the frame 8 of the machine.- Apadded roll 9 is mounted on links 10 in such a way that it is capable ofbeing rotated and also of vbeing swung toward and away from the ironwithout throwing its operating gears out of engagement. As shown, thelinks' 10 are pivotally mounted on a shaft 1l which forms a part of theoperating mechanism and extends longitudinally of the vroll 9. The' rollis provided with the usual shaft 11 meshes with and *drives the` gearv95 12. The axis of the pinion 13 coincides with the pivotal axis of thelinks 10, consequently, the gear 12 rolls around the pinion 13 duringthe operation of vswinging the roll to-f ward and away from the iron andthe gear 12 is always in mesh with the pinion.

Power is applied to the pinion 13 by means of a Worm 14, a Worm wheel15, and a clutch 16. As shown in Fig. 3the worm wheel 15 is splined on asleeve 17 which is loosely mounted on the shaft 11 and is adapted to be-moved to different longitudinal positions along the shaft by means of alinger 18. One end of the sleves 17 is shown provided with a clutchmember such I 13 to -form the clutch y16. The other end of the sleeve isprovided with a clutch member s uch as teeth which co-operate withsimilarly formed teeth on a collar 20, rigidly mounted on the shaft 11,to formV a .clutch 19. With this arrangement the Worm wheel 15 willdrive the pinion 13 or the shaft 11, depending upon the longitudinalposition of the sleeve 17 on the shaft 11. When the sleeve 17 is in theposition shown in Fig. 3, in which the clutch 16 is effective, the wormWheel 15 is operatively connected to the pinion 13 and is thereforeeffective in rotating the roll 9. `When the sleeve 17 is moved to aposition such that the clutch 19 is rendered effective, the worm Wheel15 is no longer capable of transmittin power to the pinion 13 but drivesthe sha t 11, sin'c'e it is 'operatively coupled to that shaft throughthe4 agency of the sleeve 17, the clutch 19 and the collar 20. p Thefinger 18 is preferably bifurcated at its louter end to form a yokewhich engages a groove formed in the sleeve 17. As shown in Fig. 3it ismounted on a longitudinally .shiftablc bar 21 which may be controlled byapedal 22 (Fig. 1) through the agency of' a flexible connection'23 and amotion reversing lever 24, the arrangement being such that when thepedal is depressed, the fingerV 18 is shifted to a position which movesthe sleeve 17 out of operative engagement with the pinion 13 and intooperativeengagement with the collar20. As shown, the bar 21 is mountedin suitable bearings carried by the frame 3 and is normally held in aposition such that the sleeve 17 is operatively connected to the gear 13through the agency of the clutch 16.- This is accomplished, in theillustrated embodiment by means of a coil spring 25, which surrounds thebar and iS located between one bearing block of the bar and a collar 27rigidly secured to the bar. The finger 18 is yieldingly held against theycollar 27 by means of a coil spring 28 which operates between the bossof the finger and a collar 29 rigidly secured to the bar.

The shaft 11 carries an element such as cam member or disc 30 Whichoperates to swing the roll toward and away from the iron. The operationof the cam member 30 is manually controlled through the agency of thepedal 22 and the'bar 21. This member 30 is rigidly'mounted on the shaft11 and rotates with it when the Sleeve 17 is operatively coupled to thecollar 20. Any means such as a crank pin and connecting rod may beemployed for imparting swinging motion from-this disc 30 to the roll 9,but as shown pin 31 is mounted on the disc 30 and performs the functionof a crank pin in that it shifts the position of a bell crank 32pivotally mounted on the frame 8, as the disc 3Q revolves with the shaft11. As shown, the pin 31 projects through a slot formed in one end'ofthe bell crank 32 and the oscillatory motion of the bell crank isimparted to it by this pin-and-slot connection. The other end. of thebellcrank operates to swing the roll 9 about its pivotal suport.:liccomplished by'means of a coil spring 33 which operates between thefree end of the bell crank and the upper 'end of the-link 10. As shown,a spring block 34 is pivotally connected to the free 'end of thebell-crank and a similar spring block 35 is pivotally connected to theswinging end of the link 10. AThe spring 33 is so formed and so mountedon the spring blocks 34 and 35 that it is capable of operating as atension spring for the purpose of yicldingly holding the. r'oll 9against the iron or as a strut for the purpose of moving the roll awayfrom the iron. AS the cam member 30 turns from the position shown inFig. 1, the lower end of the bell crank isdepressed by the action of thepin 31 in the slot. of the bell crank. This movement of the bell crankfirst relieves the tension of the spring 33 and then shifts the roller 9away from the iron by causing the spring 33 to operate'as astrut.

In addition to shifting the sleeve 17 the bar 21 also performs thefunction -of a cam lock bar in'that it cooperates with the cam member 30in such a way as to lock that member in determinedpositions and on theother hand the cam member automatically controls the. shifting of thebar in response to the pressure of the coil spring 25. As shown, themember 30 is provided with a notch 36 located adjacent the peripherythereof. A slot 37 diametrically opposed to the notch 36 is also formedvin the member 30.` The notch is adaptedy to vengage the projecting endof the bar 21 and to hold the bar in an intermediate position in whichthe clutch members 16 and 19 are both rendered inoperative so that therotation of the worm wheel 15 neither transmits power to the pinion 13nor to the shaft 11. This notch is also so located with relation tothepin 31 on the cam member 30 that when it is in engagement with the bar21, the roll 9 is held in the extreme position away from the iron. Theslot 37 is so located with relation'to the pin 30 that when it is inengagement with the `bar 2l, and the roll 9 is held fin ironing contactwith the iron. In addition, the slot 37 permits the bar 21 to move totheextremeposition in response to the pressure ofthe spring 25 and tothereby render the clutch 16 effective in operatively connecting theworm wheel and the pinion 13.

When it is desired to stop the roll 9 and to move it out of engagementwith the iron, the pedal 22 is momentarily depressed an In the apparatusillustrated, this is v ieu amount suliicient to Withdraw the end of theshaft 21 from engagement with the cam member 30. This movement of thebar rst releases the clutch 16 and then-operatively couples thegsleeve17 to the collarl 20 by rendering the clutch 19 effective and the Worm-Wheel to drive the shaftll. As soon as the Worm wheel is operativelycoupled to the shaft 11, the cam member 30, in rotat ing in response tothe rotation of the shaft 11, moves the slot 37 lout of line with theend of the bar and thereby prevents'the end of the bar 21 from againentering the slotand holds the bar in the extreme po ition in Which .theWorm Wheel is operativel coupled to the shaft 11. Under thesecircumstances,` the cam member 30 continues to rotate until the notch 36moves under the cam bar 21 which has, during the rotation of the member30, been yieldingly pressed into engagement with the lateral face ofthemember by the spring 25. As soon as the end of the cam bar drops intothe notch 36 the shaft 11 ceases to rotate since the clutch 19 is ren'dered ineiiective as a power transmitting l the present invention isVprovided with an y element, and the cam member is held stationary by theengagement of the bar 21 with the notchl 36. Incidentally, the movementof the cam 30 from the position in which the slot 37 is engaged by thecani bar to'the position in which the notch 36 is e'ngaged by the barswings the roll 9 away from the iron through the agency of the bellcrank 32. When it is desired to move the roll 9 back into engagementwith the iron 'and to cause it torotate, the pedal 23 is momentarilydepressed, thereby Withdrawing the cam bar from the notch 36 and lockingthe sleeve y17 to the collar 20. This causes the cam member to rotate,moving the notch 36 out of line with the end of the bar 21 andconsequently prevents the bar from moving back in response to thepressure of the spring 25.- The motion of the cam member continues untilthe end of the bar 21 drops into the notch 37, and there shifts thesleeve 17 ythrough the neutral' position to the extreme position inwhich the clutch- 16 /is rendered operative. During this movement of thecam member, the bell crank 32 is shifted so as to move the roll 9 intoengagement with the iron and subject the spring 33 to strain. i l

It will, of course, be apparent that-each end of the roll l9 is providedwith a bell crank 32 and spring 33, so that the pressure of the rollagainst the iron andthe swing fill of the roll is uniform throughout thelength of the roll. Itis, of course, unnecessary to duplicate the camlock bar 21 and the associated notch 36 and slot 37 but a disc carryinga pin 31, such as shown in Figures 1 and 2, is preferably employed atthe other end of the roll and the pin operates the bell crank 32 at'Athat end of the machine. mounted on the shaft 11'.

It will also-,be apparent that suitable bearings are provided for theshaft llrand that the pivoted ends of the links 1 0 maybe provided Withfrigid' supports or bearingsV for lthe purpose of relieving the overhungp0rtion of the shaft 11 of the strains occasioned by the roll 9. It Willalso be apparent that some means such a's stationary abutments securedto the frame 8 may be employed for preventing longitudinal movement ofthe Worm wheel 15.

In the drawings, I have shown the sleeve 17 journaled in a bearin .ring38 which is rigidly supported 0n the rame y8 and which This disc is alsoforms an abutment for holding the Worm ironing surface 40 which extendsthroughout the length of the padded roll 9.and conforms moreor less tothe contour of the surface of the roll 9 engaged by it. In ironingdampened articles the 'drying action and consequently the effectivenessof the ironing is occasioned by the fact that the Water or moisturecarried by the articles is almost immediately. converted into steam enbeing subjected to the heat of the iron. It

will be apparent that the ironing operation Will be rendered moreelfective if means are provided for venting the steam or vaporv thusformed. In my improvediron, I formv the ironing surface, or the surfaceof the iron adjacentAto theroll, so that the steam and vapor is ventedto the atmosphere immediately after its formation. In this respect,`

my `iron diiiers from irons vordinarly em-` ployed in connection withdomestic man les since, in such machines, the ironing sur ace subtends arelatvely large are of the added roll and is' held, more or lessi firm-y vinto l engagement with the surface o the material or articles ironedby the pressurelo'f the roll.

I provide a depression in the ironing surface which is so located andarranged that the materialpassing across the iron vis l graduallyrelieved of the pressure of the roll as itmoves past the depression andis simulf taneously moved into an area which 1s in free and opencommunication with the atmos-l here throu h one or more vent passages.V

n the iron i lustrated, I have provided a depression 41 in the face ofthe ironv adjacent the roll 9, and I have p rovidedslots 42 through the,iron at a point adjacent they apex ofthe depression.` These slots areprefi erably narrow and extend in the direction of rotation ofthe rollerand are preferably spaced apart a distance substantially equal to theirWidth. The series of yslots pref- 'erably extends from one end of theiron to` the other parallel to the axis of the roll 9, and establishescommunicatibn between the I ironing surface of the iron'and alongitudinally extending chamber 43 which is vented to the atmosphere byone o^r more passages 44 which extend through the heating chamber of theiron and the cover plate 45 or rear wall of that chamber. The chamber 43may be relatively shallow but is of suiicient volumetric capacity toreadily convey the steam or vapor, liberated from thelmaterial l orarticles ironed, to the-vent passages 44 l without building up pressuresby reason` of vide a vent for steam or vapor which may be carried bythem. The depression is preferably formed intermediate the inlet andoutsurface so that let edges of the ironing with the roll is articles ormaterial movin again subjected to full ironing pressure after passingthe depression.

Theheating chamber ofthe iron is substantially similar to irons now inuse. An-

elongated burner 46 extends throughout the length o-f the iron and islocated near the bottom of the heating chamber which is enclosed betweenthe ironing surface 4() andk the back cover 45. I preferably employ heattransmitting ribs 47 .on Vthe rear face *ceiving edge thereof.

of the iron. This is for the purpose of increasing` the heat absorbing'area of the iron and thereby rendering the ironniore effective as a heatconveying and ltransferring agent. As shown, thesewebs or ribs arelocated near the top of the iron on at a point where it is desirable' tosupport the subject the articles to be ironed to the greatest quantityof heat.v The ribs may be spaced-and proportioned'soas to give the bestresults from the standpoint of maximum heat conductivity. t

Another feature of my invention is to provide automatic means forcontrolling the temperature of the iron. This is accomplished in theapparatus illustrated by thermostati'cally controlling the operation ofthe fuel delivery valve in such a way as to maintain a maximumtemperature at a point of the iron immediately adjacent to the re- Asshown in the drawings, provide a. cored-notch or passage 48 in tlie'ironproper at a point adjacent its upper edge. This i notch or passagepreferably extends the en-J tire length of the iron and is adaptedtoreceive a thcrmostaticelcmcnt such as a brass or bronze bai' 49 havinga different coefficient of expansion from that of the material of lpansion orcontraction ofthe iron proper and the tliermostatic lelement49 to the valve, it also performs the function of amotionmultiplyingdevice. For this reason the arm of the bell crankoperatively coupled to the -valve 52 is considerably longer than the armAoperatively coupled to the element 49. As shown, a knife-edgeconnection is provided between the bell crank and the'element 49 andlostmotion between these two members 'is prevented or taken up by aspring 53. The element 49 carries the knife edges on a collar 54 and isprovided with an extension 55 of reduced diameter which is threaded atits outer end toreceive a spring retaining and adjusting nut. A-coilspring surrounds the extension 55 and is located between the nut carriedthereby and the bifurcated end of the bell crank which engages the knifeedges. Ajsimilar construction is employed between the longer arm of .thebell crank' and the element employed for operatively connecting it tothe valve 52. As shown in Fig. 4, the valve is of the plug or needlevalve type and cooperates with al valve casing 56 having the usual inletand outlet port and the usual valve seat formed' in the diaphragin.

The valve is shown provided with an integrallyformed squared headv 57which is "drilled and tapped to receive the threaded end of a rod orlink 58.4 The head 57 is located in a squared aperture 59 formed in anadjustable disc 50, the arrangement being such that the head may bemoved to different positions with relation'to the disc 60 for thepurpose of moving the valve 52 towardl or away from the valve seat-t.)-As shown, the disc is .providedwith a cylindrical extension located onone side thereof concentric with the aperture 58 and adapted 5to lextendinto a corresponding socket formed inthe head of the valve casing 56.With this arrangement the disc 60. may be turned to dif- Qferentpositions for the purpose of'changing.

llt

the relative adjustment between the head 57 and the link 58. In order toaccomplish this conveniently, I have shown the disc provided with ahandle 6l. It will be apparent that variations in the relativeadjustment between the head 57 and the link 58 will vary the operationof the valve in response to 'the operation of the .thermostaticielements and that an adjustment of the disc which will, inl effectshorten the valve stem and adjust the thermostaticelements so thatN theywill not close oli the fuel supply until higher temerature has beenattained; likewise an ad-4 justment of the disc which will, in effectlengthen the valve stem, will occasion a clos,-

ing of the valve in response to a lower temperature. In `order tocalibrate the ,adjust- -nient of the disc7 I provide a segment 62 onQthe valve, casing and a cooperating pointer.

63 on the disc. brated in degrees and may be employed in setting theapparatus to maintaining the deto. As shown, the link is provided withan adjustable nut `or collar 68 and a coiled sired temperature of theiron. It will, of course, be understood that any convenient means may beemployed for holding the disc in place on the valve casing and at thesame time permittin it to rotate relatively therespring is locatedbetween the-collarand the disc 60.

In the illustrated embodiment the link 58 isprovided with an extension64: which projects through an .elongated slot .in the end of the bellcrank 51. A head 65 is rigidly secured tothe upper end of thisextensionand is provided with knife edges which engage the bell crankarm on oppositesides of the extension. In order .to maintalntheadjustment between theknife edges and the bell crank arm I, have videdthe bell crank arm with a relatively shallow vV-shaped groove which 'isengaged by the knife edges. The lostv motion' 'be-' tween Vthe link 58'Vand the/bell crankl is taken` upV orrevented by coil spring 66which'surrou s the extension 64 and operates between a collar 67 formedonthe link that 'it nwill yield rea time 1t Lis preferably so .fittedinto the elongated slot of the bell crank arm that it' prevents the linkfrom turnin andthe lower face of 'the'bell crank arm. The extension 64is preferably so ,formed ily to cross bending and a't the sa whenthefdisc 60 is rotated 'to vary the a j ustment to the valve. Lostmotion between thel link. 58 and the head 57 is taken br ea `and theadjustable collar-68 on the'link.

prevent thevalye '52 from` a coil spring 69 located between the In;order to com letely" closing oi the vv'luel supply'- to the.'v urner 46,I preferably provi e al re-` stricted orifice 70- 1n the diap Thesegment may be caliother end of the leverofl the ragm of the valvevwhich 'is so proportioned that it willA permita suicient quantity offueltto pass to the 'burner to prevent the lameat the burner from goingout even when `the valve is closed. It will beapparent that the springs53, 66 'and 58a will preventinjury to the valve orI the valve set due tocontinued differential expansion of the thermostatic elements after thevalve is closed.

In Figure 8 I have shown. a thermostatic device for controlling the lowof current to an electric'heaterl a, with which the iron is equipped.

`The thermostatc element 49 b is secured at one end to the iron andprojects at the other end as described in connection with the apparatusillustrated in Figure at. The di'erential expansion of this element,with relation to theiron, is employed-for varying the current flowthrough the heater. In

thejdrawing I have provided the carbon disc pile c located in aninsulatingv support al and ,connected into the circuit heater.

The lever e .pivotally`mounted on the iron.-

rod 49 b are cold. As the iron `heats up' ressure on the pile is reducedprothe The

rat'

portlonately to the expansion of the thermo-` static elements andconsequently-the currenty ow through the heater is proportionatelyproreduced. i

jAnother feature of my invention" is'4 thatv I I provide means fordirecting articles issuing from between the rol1.9 and/the iron' towarda table ,7l located on the front orl operators sidevof the machine. Asshown lin-Fi 1, I provide anjinclined table 72 vunder the iron and therolle.

imme iatel As the'articles leave the iron, they are di- Y rected by theinclination of this table toward the table 71 and therefore slide dcwnthe table 72 instead of piling up on it. f

I also provide a 'table 73 on the frame K 8 of the machine which is solocated adjacent to the top of the roll when the roll is on the extremeposition away from the iron. 'j With this Yarran ement, the table 73 isconveniently locate be ironed -prior to the ironing when tliegroll k"isonthe extreme position away fromv the iron. '-,With this arrangement,-the-table 78 vis conveniently located for adjusting articles to beironed prior tol the ironing operation as well as during the ironing.operatlon.

for adjusting articles to In operation, the operator starts the motor 74after the burner 46 has been lighted and the iron is hot. Assuming thatthe roll 9 is in thel eXtreme position away from the iron and that thecam bar 21 is in engagement with the notch 3G of the cam Kmember 30, the.motor will runv idle since the "clutches 16 and 19 are in the neutralor ineffective' positions. After the articles to be ironed are adjustedin position with relation to the roll 9 and the iron7 the operatormomentarily depresses the pedal 22, thereby rendering the clutchV 19effective and at the same time disengaging the bar 21 from the notch 36.The rotation of the cam member 30 swings the roll 9 toward and intoengagement with the iron and also prevents the cam bar from returning tothe neutral position since the lateral face of the cam member holds thebar in such a position that the clutch 19 continues to be effectiveuntil the cam member has made a half revolution or has mov-ed theI slot37 under the end of the cam bar 21. When this happens the cam bar in'dropping into the slot 37 moves to the eXtreme position in response tothe pressure of the spring 25 and thereby disengages the clutch member19A from its operative connection with the shaft 11 and renders theclutch 16 effective in transmitting power from the continuously rotatingworm wheel 15 to the driving gear 12 of the roll. During the half turnof the cam member, the bell cranks 32 at each end of the roller 9 haveoperated to move the i roll 9 into engagement with the ironand tosubject the coil springs 33 to tensile strains. The roller is springpressed against the iron and, if desired, means may be employed foradjusting the springs 33 for the purpose of varying the ironingpressure. A momentary pressure on the pedal 22 will be effective inreleasing the cam bar 21 from the slot 37, thereby stopping the rotationof the roll and causing the roll to swing away from the iron.

While I have illustrated but one embodiillustrated without departingfrom the spirit and scope of the invention, as set forth by the appendedclaims.

I claim as my invention:

l. In combination, in an ironing machine, an iron, a rotatableroll, adriven gear secured to said roll, pivoted members on which said roll isrotatively mounted, a driving gear meshing with said driven gear andcoaxial with the pivotal axis of said pivoted 4members, means includinga rotatable element for swinging said roll about the pivotal axis ofsaid pivot members toward and away from said iron, a rotatable drivingshaft, means for selectively operatively coupling said driving shaft tosaid rotatable element or to said driving gear, and means operable inaccordance with the position of said r0- tatable element for controllingthe operation lof said coupling means.

2. In an VVironing machine, the combination with ,a shoe and a roll tobe moved to or from the shoe, of a shaft for the roll, a second shaftextending parallel to the roll, a support for each end of the roll shaftpivotally mounted on the second shaft, and means operated by the secondshaft for impressing a displacing force upon the' roll shaft to move theroll about the pivot points of the roll shaft supports.

3. In an ironing machine,the combination with a shoe and a roll memberto cooperate with each other, of means for sup;- porting-one of saidmembers, a motor for rotating theroll', a shaft extending parallel tothe roll, an element thereon rotatable therewith for actuating thesupporting means through bell-cranks, and springs, a double clutch onAthe shaft, one element of one clutch being secured thereto, a singlemember for Controlling the double clutch to first rotate December, 1921.

' `EDWIN E. ARNOLD.

7th day ofy

